RENNtech ECU Upgrade for S 65 (W221- 670 HP / 840 LB-FT) bentley-bentayga--2016-present--6-0l-twinturbo-w12-esr8256580 ML 350 BlueEFFICIENCY (W166-M276 Engine)

ML 350 BlueEFFICIENCY (W166-M276 Engine) Stock Performance:

215 - CL 600

The design of the slots refreshes the pad surface and prevent containments and water from collecting between the pad and disc

RPM for Maserati 3

Through extensive dyno and road testing

RENNtech ECU Upgrade for S 65 (W221- 670 HP / 840 LB-FT) bentley-bentayga--2016-present--6-0l-twinturbo-w12-esr8256580 ML 350 BlueEFFICIENCY (W166-M276 Engine)RENNtech ECU Upgrade for 221 S 65 AMG. Up to 670HP and 840TQ. Gains: +49HP & +102LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability. RENNtech tuning software